Israel's Jews are no more under halachic law than are San Francisco's.
I'm not saying this to give an all-warts view or paint an anti-Jewish stereotype. I tend to biased in favor of Israel and Israelis. In fact, I have a strong pro-Israel political bent especially as regards foreign and military policy.
But I don't think there is a theological reason to think God's promises are to be enforced for anti-Jesus anti-Torah apostates. The USA hasn't a role in carrying out either His promises or His chastisements regarding Israel. In fact we are under the same judgment.
So first it is geography and polity, and now it is morality that justifies breaking the command not to sell or divide the land from applying to Israel today, but which is based on a fundamental fallacy. For the commands apply regardless, and breaking them adds to that of others, such as abortion.
Since Israel also did not have a valid Levitical priesthood when the modern state was founded, nor does it have this now, then you can eliminate the regathering and founding of the state of Israel as being a work of God and fulfillment of prophecy.
However, God did not choose Israel because of their merit, nor does God love natural Israel and promise a future repentance to the remaining descendants because of their obedience, but because they are beloved for the Father's sake.